{"title":"Graptolite evidence for the ages of the Sofala Volcanics and Willow Glen Formation, northern capertee high, N.S.W.","authors":"R. B. Rickards, A. Wright, J. Pemberton","doi":"10.1080/03115519808619201","DOIUrl":null,"url":null,"abstract":"New finds of graptolites in the Cudgegong district, N.S.W., indicate a Bo3 (mid-Bolindian: Late Ordovician) age for the upper part of the Sofala Volcanics and an early Pridoli (Late Silurian) age for the upper part of the Willow Glen Formation. The Silurian graptolite is described as Monograptus parultimus minutus subsp. nov. Integration of the new biostratigraphic data with SHRIMP ages for volcanic units in the Cudgegong sequence supports an age of 410 Ma for the Silurian-Devonian boundary.","PeriodicalId":50830,"journal":{"name":"Alcheringa","volume":"89 1","pages":"223-230"},"PeriodicalIF":1.2000,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/03115519808619201","citationCount":"8","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Alcheringa","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.1080/03115519808619201","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PALEONTOLOGY","Score":null,"Total":0}
引用次数: 8
Abstract
New finds of graptolites in the Cudgegong district, N.S.W., indicate a Bo3 (mid-Bolindian: Late Ordovician) age for the upper part of the Sofala Volcanics and an early Pridoli (Late Silurian) age for the upper part of the Willow Glen Formation. The Silurian graptolite is described as Monograptus parultimus minutus subsp. nov. Integration of the new biostratigraphic data with SHRIMP ages for volcanic units in the Cudgegong sequence supports an age of 410 Ma for the Silurian-Devonian boundary.
期刊介绍：
Alcheringa : An Australasian Journal of Palaeontology is the official journal of the Australasian Palaeontologists.
Alcheringa covers all aspects of palaeontology and its ramifications into the earth and biological sciences, including:
Taxonomy-
Biostratigraphy-
Micropalaeontology-
Vertebrate palaeontology-
Palaeobotany-
Palynology-
Palaeobiology-
Palaeoanatomy-
Palaeoecology-
Biostratinomy-
Biogeography-
Chronobiology-
Biogeochemistry-
Palichnology.
Review articles are welcome, and may be solicited from time to time. Thematic issues are also possible. Emphasis is placed on high quality and informative illustration, in both line drawings and photographs. Papers of general significance may receive preference over those of more local interest.
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